JPH0345555A - Alumina porcelain composition - Google Patents
Alumina porcelain compositionInfo
- Publication number
- JPH0345555A JPH0345555A JP1178243A JP17824389A JPH0345555A JP H0345555 A JPH0345555 A JP H0345555A JP 1178243 A JP1178243 A JP 1178243A JP 17824389 A JP17824389 A JP 17824389A JP H0345555 A JPH0345555 A JP H0345555A
- Authority
- JP
- Japan
- Prior art keywords
- alumina porcelain
- alumina
- porcelain
- insulating properties
- electrical insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 24
- 239000000203 mixture Substances 0.000 title claims abstract description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 239000011575 calcium Substances 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 2
- 238000005266 casting Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010292 electrical insulation Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000001089 mineralizing effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はアルミナ磁器組成物に関し、特に高温電気絶縁
性に優れたアルミナ磁器組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an alumina porcelain composition, and particularly to an alumina porcelain composition having excellent high-temperature electrical insulation properties.
［従来の技術］
アルミナ磁器は、アルミナに鉱化剤を少量加えたものを
成形し、１３００〜１７００℃の温度で焼成して得られ
、耐熱性が極めて高く、かつ、電気絶縁性に優れた材料
である。[Prior art] Alumina porcelain is obtained by molding alumina with a small amount of mineralizing agent and firing it at a temperature of 1,300 to 1,700 degrees Celsius.It has extremely high heat resistance and excellent electrical insulation properties. It is the material.
［発明が解決しようとする課題１
しかしながら、このアルミナ磁器材料は温度の上昇に伴
ない電気絶縁性が低下し、高温におけ高絶縁性を要求さ
れる製品では、しばしば問題となっていた。[Problem to be Solved by the Invention 1] However, the electrical insulation properties of this alumina porcelain material decrease as the temperature rises, which has often been a problem in products that require high insulation properties at high temperatures.
［課題を解決するための手段］
本発明者等は、アルミナ磁器中の成分と電気絶縁性との
関係について研究を進めた結果、組成成分としてカルシ
ウム成分の存在が高温電気絶縁性に関係することを見出
して、本発明を完成させるに到った。[Means for Solving the Problem] As a result of conducting research on the relationship between components in alumina porcelain and electrical insulation, the present inventors found that the presence of a calcium component as a composition component is related to high-temperature electrical insulation. This discovery led to the completion of the present invention.
すなわち本発明は、アルミナ９９０重量％以上のアルミ
ナ磁器において、カルシウム成分をＣａＯに換算して少
なくとも０．５重量％含むことを特徴とする高温絶縁性
に優れたアルミナ磁器組成物を提供するものである。That is, the present invention provides an alumina porcelain composition having excellent high-temperature insulation properties, which is characterized in that the alumina porcelain contains 990% by weight or more of alumina and contains at least 0.5% by weight of a calcium component in terms of CaO. be.
使用するアルミナ磁器としては、アルミナ分が９０重機
知以上、好ましくは９２重量％以上のちのであり、これ
よりアルミナ分の少ない磁器では、アルカリ等の成分の
影響をうけ易く、高温での電気絶縁性が実用範囲（ｔｏ
’ΩｃＩ１１以上）からはずれるため好ましくない。The alumina porcelain to be used should have an alumina content of 90% by weight or more, preferably 92% by weight or more.Porcelain with a lower alumina content than this is easily affected by components such as alkalis and has poor electrical insulation properties at high temperatures. is the practical range (to
'ΩcI11 or higher), which is not preferable.
本発明でアルミナ磁器材料中に配合されるカルシウム成
分の瓜は、ＣａＯに換算して０．５重量％以上、好まし
くは０．５〜３．０重量％含まれることが必要であり、
これ未満では高温における電気絶縁性の低下に対して効
果が認めらない。また、３．０重量％以−ヒの配合は、
特に電気絶縁性の低下は認められないが、効果が飽和に
達し、配合による長所が発揮できない。The calcium component of melon mixed into the alumina porcelain material in the present invention needs to contain 0.5% by weight or more, preferably 0.5 to 3.0% by weight in terms of CaO,
If it is less than this, no effect will be recognized on the deterioration of electrical insulation properties at high temperatures. In addition, when the content is 3.0% by weight or more,
Although no particular decrease in electrical insulation properties was observed, the effect reached saturation and the advantages of the formulation could not be demonstrated.
アルミナ磁器材料に含まれるその他の成分については、
特に限定しないが、通常、鉱化剤として５ＬＯ２、Ｍｇ
Ｏ等が含まれる。Regarding other components contained in alumina porcelain materials,
Although not particularly limited, 5LO2 and Mg are usually used as mineralizers.
Includes O etc.
ＣａＯの添加態様は、特に限定しないが、原料配合時に
炭酸塩や硝酸塩の形で配合し、その配合量はＣａｎに換
算して所定量になる量を配合すればよい。The manner in which CaO is added is not particularly limited, but it may be blended in the form of carbonate or nitrate at the time of blending the raw materials, and the blended amount may be blended in a predetermined amount in terms of Can.
配合された原料を、プレス、鋳込みなどの方法により目
的とする形状に成形し１次いで１３００〜１７００℃の
温度で焼成することにより、アルミナ磁器が得られる。Alumina porcelain is obtained by molding the blended raw materials into a desired shape by a method such as pressing or casting, and then firing at a temperature of 1300 to 1700°C.
［実施例］
以下の実施例及び比較例において用いた原料はは、第１
表に示す分析値を有するものである。[Example] The raw materials used in the following examples and comparative examples were
It has the analytical values shown in the table.
実施例１〜６並びに実施例１及び２
原料となる酸化アルミニウム（住友化学■製、ＡＬ−２
１） 、カオリンにュージーランド産）、酸化マグネシ
ュウム（国産化学■製）、炭酸カルシウム（奥多摩化学
■製）を第２表に示す配分で配合し、アルミナミル及び
ボールを使用して混合粉砕した後、プレス成形により厚
さ２＋ａｍ、直径５０＋ｏｎ＋の円板に成形し、１６０
０℃で２時間、空気中で焼成した。Examples 1 to 6 and Examples 1 and 2 Raw material aluminum oxide (manufactured by Sumitomo Chemical, AL-2
1) Mix kaolin (produced in New Zealand), magnesium oxide (manufactured by Kokusan Kagaku ■), and calcium carbonate (manufactured by Okutama Kagaku ■) in the proportions shown in Table 2, mix and grind using an alumina mill and a ball, and then Formed into a disc with a thickness of 2+am and a diameter of 50+on+ by press molding, 160mm
Calcined in air at 0°C for 2 hours.
得られたＦｉＩＲ’Ａ円板を用い、銀を電極として室温
及び４００℃における電気抵抗を測定した。その結果を
第２表に併せて示す。Using the obtained FiIR'A disk, the electrical resistance at room temperature and at 400° C. was measured using silver as an electrode. The results are also shown in Table 2.
第２表に示す結果より、ＣａＯ量の添加配合により高温
の電気絶縁性が改善されていることが明白である。From the results shown in Table 2, it is clear that the high temperature electrical insulation properties are improved by adding the amount of CaO.
［発明の効果］
アルミナ磁器中にＣａＯを含有させることにより、高温
における電気絶縁性の低下が少ないアルミナ磁器が得ら
れ、アルミナ磁器の高温便用途が大きく拡大される。[Effects of the Invention] By incorporating CaO into alumina porcelain, alumina porcelain whose electrical insulation property decreases little at high temperatures can be obtained, and the uses of alumina porcelain for high-temperature toilets can be greatly expanded.
Claims (1)
て、カルシウム成分をＣａＯに換算して少なくとも０．
５重量％含むことを特徴とする高温絶縁性に優れたアル
ミナ磁器組成物。(1) In alumina porcelain with an alumina content of 90% by weight or more, the calcium component is at least 0.0% in terms of CaO.
An alumina porcelain composition with excellent high-temperature insulation properties characterized by containing 5% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1178243A JPH0345555A (en) | 1989-07-11 | 1989-07-11 | Alumina porcelain composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1178243A JPH0345555A (en) | 1989-07-11 | 1989-07-11 | Alumina porcelain composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0345555A true JPH0345555A (en) | 1991-02-27 |
Family
ID=16045097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1178243A Pending JPH0345555A (en) | 1989-07-11 | 1989-07-11 | Alumina porcelain composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0345555A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62113759A (en) * | 1985-11-12 | 1987-05-25 | 日本特殊陶業株式会社 | Alumina ceramic composition |
| JPS62229711A (en) * | 1986-03-31 | 1987-10-08 | 日本特殊陶業株式会社 | Alumina porcelain compound |
| JPS63291859A (en) * | 1987-05-25 | 1988-11-29 | Sumitomo Chem Co Ltd | Core material for winding fuse |
-
1989
- 1989-07-11 JP JP1178243A patent/JPH0345555A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62113759A (en) * | 1985-11-12 | 1987-05-25 | 日本特殊陶業株式会社 | Alumina ceramic composition |
| JPS62229711A (en) * | 1986-03-31 | 1987-10-08 | 日本特殊陶業株式会社 | Alumina porcelain compound |
| JPS63291859A (en) * | 1987-05-25 | 1988-11-29 | Sumitomo Chem Co Ltd | Core material for winding fuse |
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